reinaldoca

reference

• https://kubernetes.io/docs/reference/generated/kubectl/kubectl-commands
• how it works

cheatsheet & tips

• https://kubernetes.io/docs/user-guide/kubectl-cheatsheet/
• https://github.com/devoriales/kubectl-cheatsheet
• https://learncloudnative.com/blog/2022-05-10-kubectl-tips
• https://itnext.io/tips-tricks-for-cka-ckad-and-cks-exams-cc9dade1f76d
• https://cloud.google.com/anthos/gke/docs/on-prem/reference/cheatsheet

reinaldoca

Docker with SSL and an nginx reverse proxy

Running your ASP.NET Core (or other) application in Docker using SSL should not be an overwhelming task. These steps should do the trick.

Run the following steps from a Linux terminal (I used WSL or WSL2 on Windows from the Windows Terminal).

1. Create a conf file with information about the cert you'll be creating

It should look something like the content below; call it my-site.conf or something like that.

reinaldoca

Self-signed SSL reverse proxy with Docker

This is based on the marvellous blog posting by Oliver Zampieri.

This howto is written to create a self signed SSL NginX proxy on MacOS to

1. Expose proxy at local host port 5001
2. Connect the port 5001 to port 443 inside Docker
3. Proxy the port 443 to port 5000 on the host computer

This means that:

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image: an-image-with-docker-and-docker-compose

variables:
  DOCKER_TLS_VERIFY: "1"
  DOCKER_CERT_PATH: ".docker"

before_script:
- mkdir -p $DOCKER_CERT_PATH
- echo "$DOCKER_CA" > $DOCKER_CERT_PATH/ca.pem
- echo "$DOCKER_CERT" > $DOCKER_CERT_PATH/cert.pem

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#######################
# === All Systems === #
#######################
# Ensure system is fully patched
sudo yum -y makecache fast
sudo yum -y update

# Disable swap
sudo swapoff -a

reinaldoca

Kubernetes

https://kubernetes.io/docs/setup/independent/install-kubeadm/#installing-kubeadm-kubelet-and-kubectl

apt-get update && apt-get install -y apt-transport-https curl
curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add -
cat <<EOF >/etc/apt/sources.list.d/kubernetes.list
deb http://apt.kubernetes.io/ kubernetes-xenial main
EOF
apt-get update
apt-get install -y kubelet kubeadm kubectl

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#!/bin/bash
set -e;

# Set up a single-node Kubernetes system on Debian 10 (Buster).
# Use Flannel as the network fabric. Install the Kubernetes
# dashboard.

# disable swap
swapoff -a;